CVE-2023-20558

Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to an escalation of privileges.

Published: 2023-04-02 Last update: 2025-02-20 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-20558 is rated Moderate Risk (57.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.44%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-20558

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-06 0.45% 0.44% -0.01%
2 2026-04-04 0.39% 0.45% +0.07%
3 2026-04-03 — 0.39% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-20558

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-20558

Affected software / configurations for CVE-2023-20558

Vendor Product Version Raw CPE
amd ryzen_7_5700g_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_5700g_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5700ge_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_5700ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600g_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_5600g_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600ge_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_5600ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5300g_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5300ge_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_3_5300ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5980hx_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_9_5980hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5980hs_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_9_5980hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5825u_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_7_5825u_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5900hx_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_9_5900hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5900hs_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_9_5900hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5825c_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_7_5825c_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800h_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_7_5800h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5625u_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_5_5625u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800hs_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_7_5800hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5625c_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_5_5625c_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600h_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_5_5600h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600hs_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_5_5600hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800u_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_7_5800u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600u_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_5_5600u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5560u_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_5_5560u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5425u_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_3_5425u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5425c_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_3_5425c_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5400u_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_3_5400u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5125c_firmware < cezannepi-fp6_1.0.0.9 cpe:2.3:o:amd:ryzen_3_5125c_firmware:*:*:*:*:*:*:*:*
amd athlon_silver_3050u_firmware — cpe:2.3:o:amd:athlon_silver_3050u_firmware:-:*:*:*:*:*:*:*
amd athlon_gold_3150u_firmware — cpe:2.3:o:amd:athlon_gold_3150u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3200u_firmware — cpe:2.3:o:amd:ryzen_3_3200u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3250u_firmware — cpe:2.3:o:amd:ryzen_3_3250u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3300u_firmware — cpe:2.3:o:amd:ryzen_3_3300u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3350u_firmware — cpe:2.3:o:amd:ryzen_3_3350u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3450u_firmware — cpe:2.3:o:amd:ryzen_3_3450u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3500u_firmware — cpe:2.3:o:amd:ryzen_3_3500u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3500c_firmware — cpe:2.3:o:amd:ryzen_3_3500c_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3550h_firmware — cpe:2.3:o:amd:ryzen_3_3550h_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3580u_firmware — cpe:2.3:o:amd:ryzen_3_3580u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3700u_firmware — cpe:2.3:o:amd:ryzen_3_3700u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3700c_firmware — cpe:2.3:o:amd:ryzen_3_3700c_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3750h_firmware — cpe:2.3:o:amd:ryzen_3_3750h_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3780u_firmware — cpe:2.3:o:amd:ryzen_3_3780u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_2200u_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_3_2200u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_2300u_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_3_2300u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_2500u_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_2500u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_2600_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_2600_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_2600h_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_2600h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_2600x_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_2600x_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_2700_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_2700_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_2700x_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_2700x_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_2700_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_2700_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_2700u_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_2700u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_2700x_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_2700x_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_2800h_firmware < comboam4v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_2800h_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_3300x_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_3_3300x_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_3500_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_3500_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_3500x_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_3500x_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_3600_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_3600_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_3600x_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_3600x_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_3600xt_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_5_3600xt_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_3700x_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_3700x_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_3800x_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_3800x_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_3800xt_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_7_3800xt_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_3900_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_9_3900_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_3900x_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_9_3900x_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_3900xt_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_9_3900xt_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_3950x_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_9_3950x_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_pro_3900_firmware < comboam4_v2_pi_1.2.0.6c cpe:2.3:o:amd:ryzen_9_pro_3900_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_2990wx_firmware < summitpi-sp3r2_1.1.0.5 cpe:2.3:o:amd:ryzen_threadripper_2990wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_2970wx_firmware < summitpi-sp3r2_1.1.0.5 cpe:2.3:o:amd:ryzen_threadripper_2970wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_2950x_firmware < summitpi-sp3r2_1.1.0.5 cpe:2.3:o:amd:ryzen_threadripper_2950x_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_2920x_firmware < summitpi-sp3r2_1.1.0.5 cpe:2.3:o:amd:ryzen_threadripper_2920x_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_3990x_firmware < castlepeakpi-sp3r3_1.0.0.6 cpe:2.3:o:amd:ryzen_threadripper_3990x_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_3970x_firmware < castlepeakpi-sp3r3_1.0.0.6 cpe:2.3:o:amd:ryzen_threadripper_3970x_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_3960x_firmware < castlepeakpi-sp3r3_1.0.0.6 cpe:2.3:o:amd:ryzen_threadripper_3960x_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3795wx_firmware < castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_threadripper_pro_3795wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3945wx_firmware < castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3955wx_firmware < castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_threadripper_pro_3955wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3975wx_firmware < castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_threadripper_pro_3975wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3995wx_firmware < castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_threadripper_pro_3995wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_5945wx_firmware < castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_threadripper_pro_5945wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_5955wx_firmware < castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_threadripper_pro_5955wx_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-20558

cvelogic Threat Intelligence